Red Marks on Green Chromis

[smokinreefer]

Hard to tell.
I'd say disease... Because for having them for 2 months that guy looks quite thin.

[DKoKoMan]

I’m going to also go with some sort of skin disease or infection.

[straightrazorguy]

Uronema. Google it.

[Frogger]

Originally Posted by straightrazorguy

Uronema.

I concur. Your tank will always have this parasite even if you do not have fish. Best option now is to keep your fish healthy, happy and low stressed. Healthy fish in a good environment are resistant. Not sure if you can effectively treat the fish.

Work on improving the biodiversity in your tank. Competition is the best defense.

[Dearth]

https://www.reef2reef.com/threads/ur...arinum.247940/